<?php

/**
 * @copyright  For copyright and license information, read the COPYING.txt file.
 * @link       /COPYING.txt
 * @license    Open Software License (OSL 3.0)
 * @package    Mage_Eav
 */

/**
 * Eav Form Fieldset Resource Model
 *
 * @package    Mage_Eav
 */
class Mage_Eav_Model_Resource_Form_Fieldset extends Mage_Core_Model_Resource_Db_Abstract
{
    protected function _construct()
    {
        $this->_init('eav/form_fieldset', 'fieldset_id');
        $this->addUniqueField([
            'field' => ['type_id', 'code'],
            'title' => Mage::helper('eav')->__('Form Fieldset with the same code'),
        ]);
    }

    /**
     * After save (save labels)
     *
     * @param Mage_Eav_Model_Form_Fieldset $object
     * @inheritDoc
     * @throws Zend_Db_Adapter_Exception
     */
    protected function _afterSave(Mage_Core_Model_Abstract $object)
    {
        if ($object->hasLabels()) {
            $new        = $object->getLabels();
            $old        = $this->getLabels($object);

            $adapter    = $this->_getWriteAdapter();

            $insert     = array_diff(array_keys($new), array_keys($old));
            $delete     = array_diff(array_keys($old), array_keys($new));
            $update     = [];

            foreach ($new as $storeId => $label) {
                if (isset($old[$storeId]) && $old[$storeId] != $label) {
                    $update[$storeId] = $label;
                } elseif (isset($old[$storeId]) && empty($label)) {
                    $delete[] = $storeId;
                }
            }

            if (!empty($insert)) {
                $data = [];
                foreach ($insert as $storeId) {
                    $label = $new[$storeId];
                    if (empty($label)) {
                        continue;
                    }

                    $data[] = [
                        'fieldset_id'   => (int) $object->getId(),
                        'store_id'      => (int) $storeId,
                        'label'         => $label,
                    ];
                }

                if ($data) {
                    $adapter->insertMultiple($this->getTable('eav/form_fieldset_label'), $data);
                }
            }

            if (!empty($delete)) {
                $where = [
                    'fieldset_id = ?' => $object->getId(),
                    'store_id IN(?)' => $delete,
                ];
                $adapter->delete($this->getTable('eav/form_fieldset_label'), $where);
            }

            foreach ($update as $storeId => $label) {
                $bind  = ['label' => $label];
                $where = [
                    'fieldset_id =?' => $object->getId(),
                    'store_id =?'    => $storeId,
                ];
                $adapter->update($this->getTable('eav/form_fieldset_label'), $bind, $where);
            }
        }

        return parent::_afterSave($object);
    }

    /**
     * Retrieve fieldset labels for stores
     *
     * @param Mage_Eav_Model_Form_Fieldset $object
     * @return array
     */
    public function getLabels($object)
    {
        $objectId = $object->getId();
        if (!$objectId) {
            return [];
        }

        $adapter = $this->_getReadAdapter();
        $bind    = [':fieldset_id' => $objectId];
        $select  = $adapter->select()
            ->from($this->getTable('eav/form_fieldset_label'), ['store_id', 'label'])
            ->where('fieldset_id = :fieldset_id');

        return $adapter->fetchPairs($select, $bind);
    }

    /**
     * Retrieve select object for load object data
     *
     * @param string $field
     * @param mixed $value
     * @param Mage_Eav_Model_Form_Fieldset $object
     * @return Varien_Db_Select
     */
    protected function _getLoadSelect($field, $value, $object)
    {
        $select = parent::_getLoadSelect($field, $value, $object);

        $labelExpr = $select->getAdapter()->getIfNullSql('store_label.label', 'default_label.label');

        $select
            ->joinLeft(
                ['default_label' => $this->getTable('eav/form_fieldset_label')],
                $this->getMainTable() . '.fieldset_id = default_label.fieldset_id AND default_label.store_id=0',
                [],
            )
            ->joinLeft(
                ['store_label' => $this->getTable('eav/form_fieldset_label')],
                $this->getMainTable() . '.fieldset_id = store_label.fieldset_id AND default_label.store_id='
                    . (int) $object->getStoreId(),
                ['label' => $labelExpr],
            );

        return $select;
    }
}
